Thickened and wear-resistant model [six-wheel retractable] - blue

Thickened and wear-resistant model [six-wheel retractable] - red

Thickened and wear-resistant model [six-wheel retractable] - gray

Thickened and wear-resistant model [six-wheel retractable] - black

Thickened and wear-resistant orange wheel model [six wheels retractable] - blue

Thickened and wear-resistant orange wheel model [six wheels retractable] - red

Thickened and wear-resistant orange wheel model [six-wheel retractable] - gray

Thickened and wear-resistant orange wheel model [six-wheel retractable] - black